My error
I had learned about these classes from the private network perspective, so I'd always thought of them by their private networking ranges only. But I guess they extend to public (internet) IP networks as well. Of course it's just the IPs from the private ranges that you have to watch for on the internet.
~~~)-Steven----
"I want you to remember that no bastard ever won a war by dying for his country.
He won it by making the other poor dumb bastard die for his country..."
General George S. Patton